高分辨率、多功能、组织材料微观生物力学测试分析系统

之生物软组织应力松弛和蠕变测试分析
-多载荷多物理场耦合微观力学性能原位测试系统

该多轴多功能微观力学动态静态蠕变波形加载测试分系统集成压缩,拉伸,剪切,扭转 ,压痕摩擦,弯曲,穿刺,撕裂等各种高分辨率测试分析功能,适用软硬单丝生物组织材料测试。

纤维丝张力和扭力测

应力松弛函数

大鼠主动脉段多步应力松弛试验与分析

How does the creep function works?

The Creep function moves a stage until a predefined load variation (Load Target (relative to initial load)) is reached and maintains this loading through real-time closed-loop PID adjustment of the stage position. This function can be used, for example, to study the deformation of a sample under constant loading. Note that tuning a PID requires a reasonable amount of closed-loop system understanding. A set of PID parameters optimized for a particular experimental configuration will probably be inappropriate for a different configuration and could even create system instabilities (oscillations) that can result in damage to the system.

Parameters:

STAGE AXIS - On multi-axis systems, the user must specify which axis will perform the “Creep”.

DIRECTION - Specify if the stage has to start moving in the positive or negative direction. With a positive displacement, a vertical stage will move down (compression), a horizontal stage will move right, and a rotation stage will move clockwise. Enter a negative value for stage displacements in opposite directions.

STAGE VELOCITY, MM/S - Specify the speed at which the stage will move. Refer to the specifications of your MachOne? model to learn about the velocity range allowed. In MachOne Motion, the speed is always specified in absolute value terms.

RELATIVE LOAD TARGET, GF OR N - Specify the relative amount of load to be applied and maintained on the sample. When a value is entered, the stage will initiate its movement until a change in load of that magnitude is reached. The value for Relative Load Target is specified in absolute value terms.

CREEP TIME, SEC - This is the time period during which the relative loading will be maintained. Note that after this period, the final stage position will be maintained.

P GAIN - This is the Proportional gain of the PID control loop. This is the main parameter that drives the feedback loop. Our experiments revealed that a good starting point for the optimization of this parameter is given by P = 0.001 (and I = 0), then raising P in logarithmic increments (0.01, 0.1, 1) until a satisfactory amplitude in reached. The higher the P value, the faster the error will be corrected, however if the P is made too large, the error can go negative (actual load>desired load) which may start a process where the stage starts to oscillate between speeding up and slowing down. This oscillation can result in the motor control system going unstable. A simple way to eliminate this instability would be to decrease P until the oscillation stops.

I GAIN - This is the Integral gain of the PID control loop. Integral control sums the error from each position update then multiplies the sum by the Integral gain, I. Our experiments revealed that for most creep tests, best results are achieved with I = 0. If a residual error exists while holding a load, the I value can also be incrementally increased until the error disappears.

多功能组织材料生物力学特性、电位分布测试分析表征系统

型号:MachOne
联系人:李先生
联系电话:18618101725
品牌:BMM

多功能组织材料生物力学特性、电位分布测试分析表征系统

该系统是能集成压缩、张力、剪切、摩擦、扭转和2D/3D压痕、3D轮廓及多力混合耦连测试的一体化微观力学测试装置。能对生物组织、聚合物、凝胶、生物材料、胶囊、粘合剂和食品进行精密可靠的机械刺激和表征。允许表征的机械性能包括刚度、强度、模量、粘弹性、塑性、硬度、附着力、肿胀和松弛位移控制运动。

特点

1、适用样品范围广：

1.1、从骨等硬组织材料到脑组织、眼角膜等软组织材料

1.2、从粗椎间盘的样品到j细纤维丝

2、通高量压痕测试分析

2.1、三维法向压痕映射非平面样品整个表面的力学特性

2.2、48孔板中压痕测试分析

3、力学类型测试分析功能齐

模块化集成压缩、张力、剪切、摩擦、扭转、穿刺、摩擦和2D/3D压痕、3D表面轮廓、3D厚度等各种力学类型支持,微观结构表征及动态力学分析研究

4、高分辨率:

4.1、位移分辨率达0.1um

4.2、力分辨率达0.025mN

5、行程范围广：50-250mm

6、体积小巧、可放入培养箱内

7 、高变分辨率成像跟踪分析

8、多轴向、多力偶联刺激

9、活性组织电位分布测试分析

10、产品成熟，文献量达上千篇

纤维丝张力和扭力测

自动法向压痕和厚度映射

胫骨三维轮廓测试

机电活性材料（如结缔组织、带电水凝胶等）压缩过程中电位分布

该微观力学测试分析与培养系统初该系统为软骨力学性能检测所研发，此后集成了多种配置以满足更多生物组织和软质材料力学性能的测量和评估。该仪器卓越性能特点--模块化设计，简易操作平台，面向用户设计，广泛应用于生物材料检测，高分子材料检测以及数字教学等领域，产品得到了业界广泛的认可和推广。该系统

相比于传统的大型力学测试系统，该微观力学测试系统总体较小，可以实现桌面化的操作流程，操作过程简便。该系统测试方法面，是多样化的材料力学表征工具，是科学家、工程师和其他各领域用户的佳选择。在动态力学分析、薄膜、复合物、聚合物、生物产品、医学鉴定和水凝胶等领域都有广泛应用。

典型测试材料：

我公司专注生物力学和生物打印等生物医学工程科研服务-10年经验支持,
点击查更多科研工具-应用尽有

生物软组织应力松弛和蠕变试验装置-BMM 高分辨率、多功能、组织材料微观生物力学测试分析系统

高分辨率、多功能、组织材料微观生物力学测试分析系统

之生物软组织应力松弛和蠕变测试分析-多载荷多物理场耦合微观力学性能原位测试系统

How does the creep function works?

更多介绍

多功能组织材料生物力学特性、电位分布测试分析表征系统

典型测试材料：

之生物软组织应力松弛和蠕变测试分析
-多载荷多物理场耦合微观力学性能原位测试系统